Glucose promotes cell growth by suppressing branched-chain amino acid degradation

Dan Shao, Outi Villet, Zhen Zhang, Sung Won Choi, Jie Yan, Julia Ritterhoff, Haiwei Gu, Danijel Djukovic, Danos Christodoulou, Stephen C. Kolwicz, Daniel Raftery, Rong Tian

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Glucose and branched-chain amino acids (BCAAs) are essential nutrients and key determinants of cell growth and stress responses. High BCAA level inhibits glucose metabolism but reciprocal regulation of BCAA metabolism by glucose has not been demonstrated. Here we show that glucose suppresses BCAA catabolism in cardiomyocytes to promote hypertrophic response. High glucose inhibits CREB stimulated KLF15 transcription resulting in downregulation of enzymes in the BCAA catabolism pathway. Accumulation of BCAA through the glucose-KLF15-BCAA degradation axis is required for the activation of mTOR signaling during the hypertrophic growth of cardiomyocytes. Restoration of KLF15 prevents cardiac hypertrophy in response to pressure overload in wildtype mice but not in mutant mice deficient of BCAA degradation gene. Thus, regulation of KLF15 transcription by glucose is critical for the glucose-BCAA circuit which controls a cascade of obligatory metabolic responses previously unrecognized for cell growth.

Original languageEnglish (US)
Article number2935
JournalNature Communications
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2018
Externally publishedYes

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Branched Chain Amino Acids
Cell growth
glucose
amino acids
degradation
Glucose
Degradation
Growth
catabolism
metabolism
Transcription
Cardiac Myocytes
Metabolism
mice
nutrients
Cardiomegaly
determinants
restoration
genes
Nutrients

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Shao, D., Villet, O., Zhang, Z., Choi, S. W., Yan, J., Ritterhoff, J., ... Tian, R. (2018). Glucose promotes cell growth by suppressing branched-chain amino acid degradation. Nature Communications, 9(1), [2935]. https://doi.org/10.1038/s41467-018-05362-7

Glucose promotes cell growth by suppressing branched-chain amino acid degradation. / Shao, Dan; Villet, Outi; Zhang, Zhen; Choi, Sung Won; Yan, Jie; Ritterhoff, Julia; Gu, Haiwei; Djukovic, Danijel; Christodoulou, Danos; Kolwicz, Stephen C.; Raftery, Daniel; Tian, Rong.

In: Nature Communications, Vol. 9, No. 1, 2935, 01.12.2018.

Research output: Contribution to journalArticle

Shao, D, Villet, O, Zhang, Z, Choi, SW, Yan, J, Ritterhoff, J, Gu, H, Djukovic, D, Christodoulou, D, Kolwicz, SC, Raftery, D & Tian, R 2018, 'Glucose promotes cell growth by suppressing branched-chain amino acid degradation', Nature Communications, vol. 9, no. 1, 2935. https://doi.org/10.1038/s41467-018-05362-7
Shao, Dan ; Villet, Outi ; Zhang, Zhen ; Choi, Sung Won ; Yan, Jie ; Ritterhoff, Julia ; Gu, Haiwei ; Djukovic, Danijel ; Christodoulou, Danos ; Kolwicz, Stephen C. ; Raftery, Daniel ; Tian, Rong. / Glucose promotes cell growth by suppressing branched-chain amino acid degradation. In: Nature Communications. 2018 ; Vol. 9, No. 1.
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